The Current release o fthe Architect does not retain multiple historic profiling results .. it only keeps 1 set (the latest set) and you can view that while connected to the database or even if you were offline.
If you are connected to the database but have not profiled in the current session .. then it will redo the profiling on the fly and give you the latest up-to-date profiling information.
We will be adding the capability of storing historic Pofiling Results in release 2.0.